Reproductive efficiency in wool sheep artificially inseminated by the cervical or intrauterine method with fresh semen

Abstract

The objective of this work was to evaluate the effectiveness of two methods of artificial insemination: cervical (IC) vs. uterine (IU), with fresh semen, on conception rate of wool sheep. Sixty multiparous ewes of the Dorset and Suffolk breeds and their crosses were divided into two groups and subjected to the same synchronization protocol (CIDR + P4 + Cloprostenol + 200 IU of eCG). Subsequently, estrus was observed with the help of a male with apron and insemination at a fixed time (48 h). The percentage of pregnant ewes was 51.5%, with no significant difference between treatments (P>0.05); sheep group of the IU and IC groups showed 55 and 48%, respectively. It is concluded that both techniques gave similar results.